Orphaned snapshots remain after deleting volumes in CLVM_NG primary storage
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调研方向
首先，在使用 CLVM_NG 的 ACS 4.23 上复现所列出的卷和快照工作流，并通过数据库和 GUI 记录跟踪卷删除路径。将其与明确的 Volume Snapshot 删除路径进行比较；完成的标准是删除原始卷后不再留下引用它的快照，同时底层的 LVM 清理仍保持完整。
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描述
problem
Issue: Orphaned snapshots remain after deleting volumes in CLVM_NG primary storage
I'm seeing an issue with CLVM_NG primary storage where snapshots persist for volumes that have already been deleted.
Reproduction steps:
- Deploy a VM with a single root volume that has an associated volume snapshot.
- Create a new volume from that snapshot.
- Detach the root volume from the VM.
- Attach the newly created volume to the VM.
- Delete the original volume (the one with the associated snapshot).
Observed behavior:
The snapshot remains in the system, still linked to the deleted volume.
Additional observations:
- When deleting the volume, I can confirm that the LVM logical volumes (LVs) associated with both the root volume and its snapshot are deleted on the KVM hosts. So the underlying storage is cleaned up correctly.
- However, the snapshot entry is not removed from the database/GUI
- If I then manually delete the snapshot from the "Volume Snapshot" section, the operation reports success and the snapshot is no longer displayed in the GUI. This suggests the deletion works, but only when triggered explicitly against the snapshot record.
Expected behavior:
Deleting a volume should also remove (or orphan-clean) any snapshots associated with it, or at minimum the snapshot should no longer reference a non-existent volume.
versions
ACS: 4.23
Primary storage: CLVM_NG
Hypervisor: Rhel9 KVM
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